[JBoss-dev] [Caches on JBoss (Caches/JBoss)] - Re: exception design

[norbert <nu...@jb...>]

just noticed that all methods in TreeCache that make use of invokeMethod are designed to throw LockingException and TimeOutException but actually will allways throw NestedRuntimeException which is the only Exception being thrown by invokeMethod().

as a result TreeCache behaves differently in respect to the exceptions being thrown if being used as a local Cache or within a group (which should be transparent to the programmer).

The expected behavior can be archived by wrapping every call to invokeMethod with this:


  |       try {
  |       	return (Node)invokeMethod(m);
  |       } catch (NestedRuntimeException e) {
  |       	Throwable t = ((NestedRuntimeException)e).getNested();
  |       	if (t instanceof LockingException) throw (LockingException) t;
  |       	if (t instanceof TimeoutException) throw (TimeoutException) t;
  |       	if (t instanceof RuntimeException) throw (RuntimeException) t;
  |       	throw e;
  |       }
  | 

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